NY -- Standard&Poor's CreditWire 7/17/97 -- Standard&Poor's today has assigned its triple-`B'-plus rating to New York City as follows: -- $481 million G.O. fiscal tax exempt bonds series 1998A dated July 15, 1997 due Aug. 1, 2024, -- $52 million taxable G.O. bonds fiscal 1998 series A dated July 15, 1997 due Aug. 1, 2024, and -- $90 million G.O. taxable Euronotes bonds series 1998A dated July 15, 1997 due Aug. 1, 2003. Additionally, Standard&Poor's has affirmed its triple-`B'-plus rating on the city's about $26 billion outstanding G.O. debt. The outlook is stable. The rating on New York City's G.O. bonds reflects: -- A diverse broad-based economy that has grown more slowly than the